he hasn't ruiend your life, he's doing this now because you're allowing him to do it.
how long have you been split up?
if you feel he's in control still then start standing up to him, if you feel threatened to do it alone do it on the phone, or with someone else there.
I don't know your circs, but do know what it's like to have an abusive contorlling manipulative twat for an X.
are you in love with him, or is it you think you love him as no one else will love you? you have to mourn for the loss of the man you thought he was along with the future you could have had.
being a LP isn't easy granted but it's sure as hell easier than being in an abusive lonely marriage - I know which i'd pick - my own time, space & self worth any day over what I had with X.
also are you only thinking about the good times and not the bad?
oh and you are a 'proper' family. pratice this phrase from drop dead fred (I know poor film, choice but...)
'I don't need a man to complete my life'
you and your DC's are a family. just not a 'boring bog standard one!' yours is special. I think it's how you look at it tbh.
we're a year down the line, and I have wobbles still. have a fab new beau but you knwo what, in the last year i've been on dates/was with someone for about 6-8 weeks ish, and well, it was the biggest mistake - I wish I hadn't bothered as it took so much energy and just felt me feeling depleted again.
focus on you and your DC's, get out for groups etc etc and make a network again. it's hard yes but it's do-able. when the time is right you'll meet a nice chap who will treat you right, and you'll also be able to say to him, 'you know what... i'm walking this way.. if you don't like it there's the door I don't care' instead of being currently in a place of saying 'don't leave and trying to draw them close' as the other poster says that will lead to the wrong sorts of men.